What about the new TSB account?
Safe.
5% on balances up to £2000
Two accounts allowed per person - so four accounts per couple (£8000).
£500 must be deposited each month into each account, but once deposited into one, can be moved/deposited into the other three in turn (I believe).
No interest above £2000 so some on-going account management required.
I don't know how user friendly the mechanics of the process are, but I'm going to look into it.